Steel structure and installation method of large-span metal roof

Abstract

The application relates to the technical field of steel structures, and provides a large-span metal roof steel structure, which comprises a supporting base and a truss unit, the supporting base is provided with a detachable jacking mechanism, the jacking mechanism is used for lifting the truss unit and supporting above the supporting base, the jacking mechanism is provided with an adjusting assembly used for adjusting the position of the truss unit and moving to the top of the supporting base; the supporting base is provided with a mounting assembly, when two adjacent truss units are both mounted above the supporting base, the two adjacent truss units are connected through the mounting assembly. The large-span metal roof steel structure has the advantages that the jacking mechanism is used for conveying the truss unit to above the supporting base, the position of the truss unit is adjusted through the adjusting assembly, the alignment between the two truss units is facilitated, the possibility that the truss unit shakes and is not beneficial to alignment in the hoisting process is reduced, and the installation efficiency is improved. The application further provides a large-span metal roof installation method.

Description

Technical Field

[0001] This application relates to the field of steel structure technology, particularly to steel structures and installation methods for large-span metal roofs. Background Technology

[0002] With the rapid development of the social economy and the continuous improvement of people's living standards, in order to build larger and stronger super-large and complex buildings to meet people's pursuit of living space, large-span steel structures have been developed.

[0003] In existing technologies, large-span truss steel structures are divided into multiple truss units, which are then hoisted to a certain height and welded together to form a whole truss, thereby reducing the difficulty of hoisting large-span trusses.

[0004] During the lifting process, due to construction errors during ground assembly of the truss and the difficulty in controlling its angle during lifting, the truss unit is prone to tilting during lifting, causing deviations between adjacent truss units and increasing the difficulty of welding the truss unit. Summary of the Invention

[0005] To facilitate the connection of two adjacent truss units at high altitudes, this application provides a method for installing steel structures for large-span metal roofs.

[0006] Firstly, the steel structure of the large-span metal roof provided in this application adopts the following technical solution:

[0007] The steel structure of the large-span metal roof includes multiple supporting bases and multiple truss units. Each supporting base is detachably equipped with a lifting mechanism for raising and placing the truss units above the supporting bases. The lifting mechanism is equipped with an adjustment component for adjusting the position of the truss units. Each supporting base is equipped with an installation component for fixing the truss units to the supporting bases. When two adjacent truss units are both installed above the supporting bases, the two adjacent truss units are connected by a fixing component.

[0008] By adopting the above technical solution, when installing the truss unit above the support base, the lifting mechanism is first connected to the truss unit. The lifting mechanism raises the truss unit, and the position of the truss unit is adjusted by the adjusting component and transferred to the support base. Then, the installation component fixes the truss unit above the support base. After that, the lifting mechanism lifts another truss unit above the support base. The position between the two adjacent sets of truss units is adjusted by the adjusting component. After the two truss units are fixed above the support base by the installation component, the fixing component can connect the two truss units, reducing the possibility of swaying during the lifting of the truss unit, which is not conducive to alignment.

[0009] Optionally, the lifting mechanism includes two movable locking components and a drive reset component. The support base has multiple locking slots, all of which are spaced apart along the height direction of the support base. The two movable locking components are respectively installed in the two locking slots, and the adjustment component is installed on the upper movable locking component. The drive reset component is installed between the two movable locking components and is used to move the movable locking component from one locking slot to an adjacent locking slot.

[0010] By adopting the above technical solution, after the workers have erected the truss unit on the ground, they lift the truss unit onto the upper movable locking assembly. At this time, the drive reset assembly is activated, and the lower movable locking assembly supports the drive reset assembly. Then, the upper movable locking assembly is moved from one locking slot to another, where the upper movable reset assembly supports the drive reset assembly. The drive reset assembly then lifts the lower movable locking assembly. This action is repeated, thereby lifting the truss unit onto the top of the support base.

[0011] Optionally, the truss unit is mounted at both ends between two lifting mechanisms.

[0012] By adopting the above technical solution, the truss unit is lifted simultaneously by two sets of lifting mechanisms, which further improves the stability of the truss unit during the lifting process.

[0013] Optionally, the drive reset assembly includes two cylinders, which are respectively fixed to one side of the two movable latching assemblies that are close to each other, and the drive shafts of the two cylinders are respectively fixed to adjacent movable latching assemblies.

[0014] By adopting the above technical solution, during the lifting process of the truss unit, one cylinder is first set to the active state and the other cylinder to the passive state. At this time, the drive shaft of the cylinder can lift the upper movable snap-fit ​​component so that it can be inserted from the snap-fit ​​slot into another snap-fit ​​slot. Then, the other cylinder is set to the active state and the other cylinder is set to the passive state, driving the other cylinder to pull the lower movable snap-fit ​​component upward, thereby changing its position. The action of the two cylinders is repeated, thereby lifting the truss unit above the support base.

[0015] Optionally, the adjustment assembly includes a first linear module and a second linear module. The first linear module is mounted on the movable snap-fit ​​assembly, and the second linear module is mounted above the first linear module. The conveying direction of the first linear module is perpendicular to the conveying direction of the second linear module. The truss unit is detachably mounted on the second linear module, and the second linear module is used to transport the truss unit to the top wall of the support base.

[0016] By adopting the above technical solution, and by setting the first linear module and the second linear module, the position of the truss unit can be adjusted so that the positions of the two truss units can be aligned, and the truss unit can be transferred from the movable snap-fit ​​assembly to the support base, thereby completing the connection of the two truss units.

[0017] Optionally, the second linear module is equipped with a sliding plate, and the truss unit is installed on the sliding plate by a first bolt; a connecting slot for the sliding plate to be inserted is provided above the support base.

[0018] By adopting the above technical solution, by setting the sliding plate and the first bolt, it is convenient to install the truss unit on the top of the moving reset assembly and transport it to the top wall of the support base; by setting the connecting groove, it is possible to reduce the gap between the truss unit and the top wall of the support base, so as to facilitate the removal of the sliding plate from the truss unit and the support base.

[0019] Optionally, the movable latching assembly includes a sliding block, a latching block, and a first spring. The sliding block is slidably mounted on the side of the support base near the latching groove. The sliding block has a movable groove, and the latching block is slidably mounted in the movable groove. The latching block is used to insert into the latching groove. The first spring is installed between the latching block and the inner wall of the movable groove. The elastic force of the first spring causes the latching block to be normally inserted into the latching groove. One side of the latching block is defined as a first guide surface, which is used to guide the latching block into the movable groove.

[0020] By adopting the above technical solution, when the drive reset component drives the sliding block to move, the sliding block is moved away from the ground by the drive reset component. At this time, the first guide surface abuts against the inner wall of the snap-fit ​​groove, so that the snap-fit ​​block can enter the snap-fit ​​groove under the guidance of the first guide surface; thus, the sliding block can slide upward on the side wall of the support base. When the movable groove is aligned with the next snap-fit ​​groove, the snap-fit ​​block is inserted into the snap-fit ​​groove under the elastic force of the first spring, thus completing the movement of the sliding block on the side wall of the support base, and repeating the drive action, thereby moving the sliding block to the top of the support base.

[0021] Optionally, the snap-fit ​​block is rotatably mounted in the movable groove, and the sliding block is equipped with a positioning component for fixing the position of the snap-fit ​​block.

[0022] By adopting the above technical solution, the orientation of the first guide surface can be changed by rotating the snap-fit ​​block into the movable groove. When the first guide surface faces the ground, the sliding block can move into the movable groove under its own weight, thereby enabling the sliding block to move to the bottom of the support base, which facilitates the disassembly of the movable snap-fit ​​assembly.

[0023] Optionally, the fixing component includes a sleeve and a second bolt. When two adjacent truss units abut each other, the sleeve is fitted between the two truss units, and the second bolt is used to fix the position of the sleeve and the truss unit.

[0024] By adopting the above technical solution, the sleeve is first fitted onto one of the truss units. Then, after the two adjacent truss units are fixed to the top of the support base, the sleeve is moved so that it fits onto the two truss units and is fixed by the second bolt, thereby completing the connection of the two truss units.

[0025] Secondly, the method for installing a large-span metal roof provided in this application specifically includes the following steps:

[0026] S1 divides the large-span truss into multiple truss units, and then selects appropriate support bases according to the specifications of the truss units;

[0027] S2 sets up a corresponding number of lifting mechanisms according to the number of truss units, and fixes the truss units above the support base through the lifting mechanisms;

[0028] S3 uses installation components to secure the truss units to the support base and removes the lifting mechanism from the support base to transport the next set of truss units;

[0029] After S4 transports the next set of truss units to the top of the support base via the lifting mechanism, it aligns them with the adjacent truss units and connects them via the fixing components.

[0030] S5 connects multiple truss units in sequence to form a complete large-span truss.

[0031] By adopting the above technical solution, the lifting mechanism raises the truss units sequentially and raises them above the support base, and uses the installation components to fix the truss units above the support base; after two adjacent truss units are fixed to the support base, the fixing components can connect the two truss units, reducing the swaying that may occur during the lifting of the truss units, which is not conducive to alignment.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. By setting up a lifting mechanism and an adjustment component, the truss unit is transferred to the support base by the lifting mechanism and the position of the truss unit is adjusted by the adjustment component, which facilitates the alignment between two truss units, reduces the possibility of swaying during the lifting of the truss unit and thus improves the installation efficiency.

[0034] 2. By rotating the snap-fit ​​block into the movable slot, the orientation of the first guide surface can be changed. When the first guide surface faces the ground, the sliding block can move into the movable slot under its own weight, thereby allowing the sliding block to move to the bottom of the support base, which facilitates the disassembly of the movable snap-fit ​​assembly. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the installation of the truss unit and the supporting base in this embodiment;

[0036] Figure 2 This is a structural schematic diagram of this embodiment;

[0037] Figure 3 This is a partial cross-sectional view of the fixing component in this embodiment;

[0038] Figure 4 This is a partial cross-sectional view of the support base in this embodiment, mainly showing the movable snap-fit ​​component;

[0039] Figure 5 yes Figure 4 A magnified view of a portion at point A;

[0040] Figure 6 This is a schematic diagram of the installation of the positioning component in this embodiment;

[0041] Figure 7 yes Figure 2 A magnified view of a portion at point B;

[0042] Figure 8 yes Figure 7 A magnified view of a portion at point C;

[0043] Figure 9 This is a partial cross-sectional view of the support base from another angle in this embodiment, mainly showing the positioning block;

[0044] Figure 10 This is a schematic diagram of the installation components in this embodiment.

[0045] Explanation of reference numerals in the attached drawings: 1. Support base; 11. Snap-fit ​​groove; 12. Slide groove; 13. Unlocking rod; 14. Slider; 15. Third bolt; 16. Connecting groove; 17. Second threaded groove; 18. First positioning groove; 181. Positioning block; 182. Second spring; 183. Second guide surface; 19. Unlocking groove; 2. Truss unit; 21. Horizontal rib; 22. Reinforcing rib; 23. Connecting rib; 24. Reinforcing groove; 25. Reinforcing block; 26. First bolt; 27. Third threaded hole; 3. Mounting assembly; 31. Fixing half ring; 32. Fourth bolt; 33. Extension; 34. Fourth threaded hole; 4. Fixing assembly; 41. Sleeve; 42. Second bolt; 43. 44. Second threaded hole; 5. Lifting mechanism; 51. Moving snap-fit ​​assembly; 511. Sliding block; 512. Snap-fit ​​block; 513. First spring; 514. Movable groove; 515. First guide surface; 516. Rotating groove; 517. Insertion groove; 518. Mounting groove; 519. Second positioning groove; 52. Drive reset assembly; 521. Cylinder; 53. Rotating rod; 531. Guide bar; 532. Threaded part; 54. Positioning assembly; 541. Insertion ring; 542. Nut; 543. Guide groove; 544. Insertion block; 6. Adjustment assembly; 61. First linear module; 62. Second linear module; 63. Slide plate; 64. First threaded groove. Detailed Implementation

[0046] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0047] Example 1:

[0048] This application discloses steel structures for large-span metal roofs, particularly steel structures located at the edges of buildings, where multiple supports are typically required to improve the stability of the steel structure.

[0049] Reference Figure 1 and Figure 2 The steel structure of the large-span metal roof includes multiple supporting bases 1 and multiple truss units 2. The supporting bases 1 are used to erect the truss units 2 in the air, and the supporting bases 1 are provided with mounting components 3 for fixing the position of the truss units 2. After the truss units 2 are erected in the air, two adjacent truss units 2 are connected by fixing components 4 to form a large-span truss.

[0050] Reference Figure 2The truss unit 2 includes four horizontal ribs 21 and multiple reinforcing ribs 22. Two adjacent horizontal ribs 21 are connected by multiple connecting ribs 23, and the four horizontal ribs 21 enclose a rectangle. The reinforcing ribs 22 are inclined between two horizontal ribs 21, and the two ends of the reinforcing ribs 22 are respectively connected to two adjacent connecting ribs 23. By dividing the large-span truss into multiple truss units 2, and connecting two adjacent truss units 2 after the truss units 2 are assembled on the ground, the difficulty of assembling the large-span truss in the air can be reduced and the installation efficiency can be improved. The strength of the truss unit 2 and its stability in the air can be improved by setting the reinforcing ribs 22.

[0051] Reference Figure 3 The transverse rib 21 has a reinforcing groove 24 on its side wall, with one side of the reinforcing groove 24 penetrating through the side wall of the transverse rib 21. The part of the truss located on one side of the reinforcing groove 24 is a reinforcing block 25. When two adjacent truss units 2 are connected, the reinforcing block 25 is inserted into the reinforcing groove 24 of the adjacent transverse rib 21. The fixing component 4 includes a sleeve 41 and a second bolt 42. Both ends of the sleeve 41 have first threaded holes 43, and the transverse rib 21 has second threaded holes 44. When the reinforcing block 25 of the transverse rib 21 is inserted into the reinforcing groove 24 of the adjacent transverse rib 21, the sleeve 41 is fitted between the transverse ribs 21 of the two adjacent truss units 2, and the first threaded holes 43 at both ends of the sleeve 41 are respectively aligned with the second threaded holes 44 of the two transverse ribs 21. The second bolt 42 passes between the first threaded holes 43 and the second threaded holes 44, thereby completing the fixing of the two truss units 2. Furthermore, the cooperation between the reinforcing block 25 and the reinforcing groove 24 can increase the connection between the two truss units 2 and improve the stability of the two truss units 2 after they are fixed.

[0052] Reference Figure 4 The support base 1 is detachably equipped with a lifting mechanism 5 for raising the truss unit 2. The lifting mechanism 5 includes two movable locking assemblies 51 and a drive reset assembly. Multiple locking slots 11 are provided on the side wall of the support base 1, and all locking slots 11 are spaced apart along the length of the support base 1. The two movable locking assemblies 51 are respectively installed in two adjacent locking slots 11, and the drive reset assembly is installed between the two movable locking assemblies 51. When it is necessary to raise the truss unit 2, the truss unit 2 is mounted on the movable locking assemblies 51 located above the two adjacent lifting mechanisms 5. The drive reset assembly can move the movable locking assemblies 51 from the adjacent locking slots 11, thereby gradually raising the truss unit 2. Furthermore, raising the truss unit 2 via the two lifting mechanisms 5 improves the stability of transporting the truss unit 2.

[0053] Reference Figure 5The movable locking assembly 51 includes a sliding block 511, a locking block 512, and a first spring 513. The sliding block 511 is slidably mounted on the side of the support base 1 near the locking groove 11. A sliding groove 12 is provided on the side wall of the support base 1, and a slider 14 is slidably mounted in the sliding groove 12. A reinforcing post (not shown in the figure) is provided on the side of the slider away from the sliding groove. A reinforcing groove is provided for the reinforcing post to be inserted when the slider is moved away. After the reinforcing post is inserted into the reinforcing groove, the sliding block 511 is fixed to the slider 14 by a third bolt 15, thereby enabling the sliding block 511 to slide against the side wall of the support base 1. By providing the reinforcing post, the contact area between the slider 14 and the sliding block 511 can be increased, thereby improving the stability of the sliding block 511 on the slider 14.

[0054] A sliding block 511 has a movable groove 514 near the supporting base 1. A snap-fit ​​block 512 is slidably installed in the movable groove 514 and is used to insert into the snap-fit ​​groove 11. A first spring 513 is installed between the inner wall of the movable groove 514 and the snap-fit ​​block 512. The elastic force of the first spring 513 can make the snap-fit ​​block 512 normally inserted into the snap-fit ​​groove 11. In this embodiment, the snap-fit ​​block 512 is a cylinder. A first guide surface 515 is provided on one side of the snap-fit ​​block 512. The first guide surface 515 is used to guide the snap-fit ​​block 512 and insert it into the movable groove 514.

[0055] When the snap-fit ​​block 512 is securely inserted into the snap-fit ​​groove 11, that is, when the movable snap-fit ​​assembly 51 is fixed to the side wall of the support base 1, the side of the snap-fit ​​block 512 away from the first guide surface 515 abuts against the bottom of the snap-fit ​​groove 11; when the drive reset assembly 52 is activated, the first guide surface 515 of the snap-fit ​​block 512 can abut against the inner wall of the snap-fit ​​groove 11, and enter the movable groove 514 under the guide surface of the inner wall of the snap-fit ​​groove 11, thereby playing the role of moving the position of the sliding block 511; during the sliding process of the sliding block 511, when the movable groove 514 is set opposite to another snap-fit ​​groove 11, the snap-fit ​​block 512 is inserted into the snap-fit ​​groove 11 under the elastic force of the first spring 513, thereby completing the role of moving the position of the truss unit 2.

[0056] Reference Figure 6A rotating rod 53 is fixed to one end of the snap-fit ​​block 512 away from the snap-fit ​​groove 11. A rotating groove 516 is provided on the inner wall of the movable groove 514, which is connected to the outside. The rotating rod 53 passes through the rotating groove 516 and is exposed to the outside. By rotating the rotating rod 53, the snap-fit ​​block 512 can rotate in the movable groove 514 and change the direction of the first guide surface 515. The sliding block 511 is equipped with a positioning component 54 to prevent the snap-fit ​​block 512 from rotating on its own. By rotating the snap-fit ​​block 512 in the movable groove 514, the first guide surface 515 can be changed so that the first guide surface 515 faces the side closer to the ground. At this time, the snap-fit ​​block 512 enters the movable groove 514 under the guidance of the first guide surface 515, so that the sliding block 511 slides downward under its own weight and moves to the bottom of the support base 1. The operator can easily disassemble the movable snap-fit ​​component 51 from the bottom of the support base 1 and assemble it with the new support base 1.

[0057] The positioning assembly 54 includes a plug ring 541 and a nut 542. The side of the rotating rod 53 exposed to the outside is provided with a guide bar 531 and a threaded portion 532. The plug ring 541 is provided with a guide groove 543 for the guide ring to slide. The two ends of the guide groove 543 are connected to the opposite side walls of the plug ring 541. Plug blocks 544 are fixed to opposite sides of the plug ring 541. The outer wall of the sliding block 511 is provided with a plug groove 517 for the plug blocks 544 to be inserted. When the plug blocks 544 are inserted into the plug groove 517, the nut 542 cooperates with the threaded portion 532 of the rotating rod 53, thereby clamping the plug ring 541 between the nut 542 and the sliding block 511.

[0058] When the guide groove 543 of the insertion ring 541 cooperates with the guide strip 531 of the rotating rod 53, the free rotation of the insertion ring 541 on the rotating ring can be reduced; and by inserting the insertion block 544 into the insertion groove 517, the free rotation of the rotating rod 53 can be reduced, thereby reducing the possibility of the locking block 512 rotating freely; and by setting the nut 542, the situation of the insertion ring 541 disengaging from the rotating rod 53 can be reduced.

[0059] Reference Figure 7 and Figure 8An adjustment component 6 is provided on the upper sliding block 511. The adjustment component 6 includes a first linear module 61 and a second linear module 62. An installation groove 518 is opened on the upper surface of the sliding block 511. The first linear module 61 is installed on the inner wall of the installation groove 518. The second linear module 62 is fixed on the slider 14 of the first linear module 61. The conveying direction of the first linear module 61 is perpendicular to the conveying direction of the second linear module 62. A slide plate 63 is fixed on the slider 14 of the second linear module 62. A first threaded groove 64 is opened on the slide plate 63. One of the connecting ribs 23 of the truss unit 2 is provided with a third threaded hole 27. When the truss unit 2 is mounted on the surface of the sliding block 511, the third threaded hole 27 and the first threaded groove 64 are both connected by a first bolt 26. The top wall of the support base 1 is provided with a connecting groove 16 for the slide plate 63 to be inserted.

[0060] By setting the adjustment component 6, when the truss unit 2 is mounted on the surface of the sliding block 511 located above, the second linear module is moved by driving the slider 14 of the first linear module so that the first threaded groove 64 and the third threaded hole 27 are aligned. At this time, the first bolt 26 is inserted into the third threaded hole 27 and the first threaded groove 64; thus, the truss unit 2 and the sliding block 511 can be fixed, so as to facilitate the movement of the locking component 51 to transport the truss unit 2; when the truss unit 2 is transported above the support base 1, the first linear module 61 The second linear module 62 can adjust the position of the truss unit 2, and the slider 14 of the second linear module 62 moves the slide plate 63 so that the slide plate 63 is inserted into the connecting groove 16, thereby transferring the truss unit 2 above the support base 1; at this time, the truss unit 2 is fixed by the mounting component 3, and the first bolt 26 is removed from the third threaded hole 27 and the first threaded groove 64, thereby allowing the slide plate 63 to be retracted into the mounting groove 518, and the moving snap-fit ​​component 51 is moved to the bottom of the support base 1 for disassembly.

[0061] Reference Figure 9 A first positioning groove 18 is provided on the side of the support base 1 near the snap-fit ​​groove 11. A positioning block 181 is slidably installed in the first positioning groove 18. A second spring 182 is installed between the positioning block 181 and the first positioning groove 18, and the second spring 182 is in a compressed state. A second positioning groove 519 is provided on the sliding block 511. When the truss unit 2 is raised above the support base 1, the positioning block 181 is inserted into the second positioning groove 519. By setting the positioning block 181 and inserting it into the second positioning groove 519, the sliding of the sliding block 511 on the support base 1 during the rotation of the rotating block is reduced, thereby reducing safety hazards.

[0062] Reference Figure 7Furthermore, the support base 1 has an unlocking groove 19 on its side wall, which is connected to the first positioning groove 18. An unlocking rod 13 is fixed to the positioning block 181, passing through the unlocking groove 19 and exposed to the outside. By setting the unlocking rod 13, the positioning block 181 can be slid. After both sliding blocks 511's locking blocks 512 have rotated, the positioning block 181 is disconnected from the second positioning groove 519, allowing the sliding block 511 to slide downwards by its own weight. In addition, setting the unlocking rod 13 on the support base 1 reduces the possibility of the sliding block 511 moving downwards due to its own weight during adjustment by the operator, thus reducing safety hazards.

[0063] Reference Figure 4 The drive reset assembly 52 includes two cylinders 521, which are respectively fixed to the sliding block 511 on one side close to each other. The cylinder 521 fixed to the lower sliding block 511 is defined as the first cylinder 521, and the cylinder 521 fixed to the upper sliding block 511 is defined as the second cylinder 521. The drive shafts of the first cylinder 521 and the second cylinder 521 are respectively fixed to the adjacent sliding block 511. During the lifting process of truss unit 2, the first cylinder 521 is set to the active state and the second cylinder 521 is set to the passive state. At this time, the drive shaft of the first cylinder 521 can lift the upper sliding block 511 so that the locking block 512 can be inserted from the locking slot 11 into another locking slot 11. Then, the second cylinder 521 is set to the active state and the first cylinder 521 is set to the passive state. Each time the second cylinder 521 is driven, it can pull the lower sliding block 511 upward, thereby changing its position. The actions of the first cylinder 521 and the second cylinder 521 are repeated, thereby lifting the truss unit 2 above the support base 1.

[0064] Reference Figure 10 In this embodiment, the mounting component 3 includes a fixing half-ring 31 and a fourth bolt 32. The fixing half-ring 31 extends outward at both ends and is provided with an extension portion 33. The extension portion 33 is provided with a fourth threaded hole 34. The top wall of the support base 1 is provided with a second threaded groove 17. When the truss unit 2 is mounted on the upper surface of the support base 1, the fixing half-ring 31 is fitted onto the outer wall of the transverse rib 21 and the extension portion 33 abuts against the top wall of the support base 1. At this time, the fourth threaded hole 34 and the second threaded groove 17 are aligned. The fourth bolt 32 passes through the fourth threaded hole 34 and the second threaded groove 17, thereby completing the fixing of the truss unit 2 and the support base 1.

[0065] The implementation principle of Embodiment 1 of this application is as follows:

[0066] When installing the truss unit 2 above the supporting base 1, the lifting mechanism 5 is first connected to the truss unit 2. The lifting mechanism 5 raises the truss unit 2 above the supporting base 1, and adjusts the position of the truss unit 2 through the first linear module 61 and the second linear module 62, so that the slide plate 63 is inserted into the connecting groove 16. The truss unit 2 is then fixed to the supporting base 1 by the mounting assembly 3. During the process of the slider 14 being inserted into the connecting groove 16, two adjacent truss units 2 can complete the alignment of the transverse ribs 21. That is, after the slide plate 63 is fully inserted into the connecting groove 16, the reinforcing block 25 of the transverse rib 21 is inserted into the reinforcing groove 24 of the adjacent transverse rib 21. After the truss unit 2 is fixed to the supporting base 1, the sleeve 41 can be fitted between two adjacent transverse ribs 21, and the second bolt 42 is used to fix them together to form a whole, thus completing the construction of the large-span truss unit 2. The position of the truss unit 2 can be adjusted by adjusting component 6, which facilitates the alignment between the two truss units 2, reduces the possibility of swaying during the lifting of the truss unit 2 and thus improves the installation efficiency.

[0067] This embodiment also discloses a method, which specifically includes the following steps:

[0068] S1: First, the large-span truss is divided into multiple truss units 2, and the truss units 2 are erected one by one on the ground, that is, the horizontal bars 21, the connecting bars 23 and the reinforcing bars 22 are connected one by one to form the truss unit 2; then, according to the specifications of the truss unit 2, a suitable support base 1 is selected, and the support base 1 is vertically fixed to the ground.

[0069] S2: Set up a corresponding number of lifting mechanisms 5 according to the number of truss units 2. Connect the sliding block 511 to the slider 14 through the third bolt 15, so that the sliding block 511 can be slidably installed on the side wall of the support base 1. Then fix the first cylinder 521 and the second cylinder 521 between the two sliding blocks 511. Then, the operator lifts the truss unit 2 onto the sliding block 511 located above the two lifting mechanisms 5, and drives the first linear module 61 and the second linear module 62 so that the first threaded hole 43 and the second threaded hole 44 are aligned. The first bolt 26 is inserted into the first threaded hole 43 and the second threaded hole 44 to complete the fixation of the cross frame unit and the slide plate 63. At this time, start the first cylinder 521 and the second cylinder 521 to gradually lift the sliding block 511 upward, so that the truss unit 2 is transferred to the top of the support base. And adjust the position of the slide plate 63 through the second linear module 62 so that it is inserted into the connecting groove 16 of the top wall of the support base 1.

[0070] S3 uses a fixed half-ring 31 fitted onto the outer wall of the transverse rib 21, and connects the fourth threaded hole 34 of the extension 33 with the second threaded groove 17 of the top wall of the support base 1. Then, the fourth bolt 32 is inserted to complete the fixation of the truss unit 2 to the support base 1. The connection between the connecting rib 23 and the slide plate 63 is removed by the first bolt 26, and the second linear module 62 is driven so that the slide plate 63 enters the mounting groove 518. Then, the guide surface of the snap-fit ​​block 512 is turned by the positioning component 54, and the two slide plates are aligned. After all the locking blocks 512 of the sliding block 511 have turned, the moving unlocking rod 13 cancels the insertion of the positioning block 181 into the second positioning groove 519. The sliding block 511 is subjected to downward gravity, causing the locking blocks 512 to enter the locking groove 11 under the guidance of the guide surface. At this time, the sliding block 511 slides down to the bottom of the support base 1. Then, the connection between the sliding block 511 and the slider 14 is canceled by the third bolt 15. Then, the moving locking assembly 51 is connected to the next support base 1 to transport the next set of truss units 2.

[0071] S4 First, sleeve 41 is fitted onto the horizontal rib 21 fixed to the support base 1. Then, the next set of truss units 2 is transported to the top wall of the support base 1 through the lifting mechanism 5. The position of sleeve 41 is moved so that sleeve 41 is fitted onto the horizontal rib 21 of the adjacent truss unit 2, and the first threaded hole 43 and the second threaded hole 44 are aligned. Then, the second bolt 42 is inserted into the first threaded hole 43 and the second threaded hole 44 to complete the connection of the two adjacent truss units 2.

[0072] S5 connects multiple sets of truss units 2 in sequence to form a complete large-span truss.

[0073] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. Steel structure of a large-span metal roof, characterized in that: The system includes multiple support bases (1) and multiple truss units (2). The support bases (1) are equipped with a detachable lifting mechanism (5) for lifting the truss units (2) above the support bases (1). The lifting mechanism (5) is equipped with an adjustment component (6) for adjusting the position of the truss units (2) and moving them to the top wall of the support bases (1). The support bases (1) are equipped with an installation component (3) for fixing the truss units (2) to the support bases (1). When two adjacent truss units (2) are both installed above the support bases (1), the two adjacent truss units (2) abut against each other and are connected by a fixing component (4). The lifting mechanism (5) includes two movable locking components (51) and a drive reset component (52). The support base (1) has multiple locking slots (11), and all locking slots (11) are spaced apart along the height direction of the support base (1). The two movable locking components (51) are respectively installed in the two locking slots (11), and the adjustment component (6) is installed on the movable locking component (51) located above. The drive reset component (52) is installed between the two movable locking components (51), and the drive reset component (52) is used to move the movable locking component (51) from one locking slot (11) to another adjacent locking slot (11).

2. The steel structure of the long-span metal roof according to claim 1, characterized in that: The truss unit (2) is mounted at both ends between the two lifting mechanisms (5).

3. The steel structure of the long-span metal roof according to claim 2, characterized in that: The drive reset assembly (52) includes two cylinders (521), which are respectively fixed to the side of the two movable snap-fit ​​assemblies (51) that are close to each other, and the drive shafts of the two cylinders (521) are respectively fixed to the adjacent movable snap-fit ​​assemblies (51).

4. The steel structure of the large-span metal roof according to claim 3, characterized in that: The adjustment component (6) includes a first linear module (61) and a second linear module (62). The first linear module (61) is installed on the movable snap-fit ​​component (51), and the second linear module (62) is installed above the first linear module (61). The conveying direction of the first linear module (61) is perpendicular to the conveying direction of the second linear module (62). The truss unit (2) is detachably installed on the second linear module (62). The second linear module (62) is used to transport the truss unit (2) to the top wall of the support base (1).

5. The steel structure of the long-span metal roof according to claim 4, characterized in that: The second linear module (62) is equipped with a slide plate (63), and the truss unit (2) is installed on the slide plate (63) by a first bolt (26); a connecting groove (16) for the slide plate (63) to be inserted is provided on the upper part of the support base (1).

6. The steel structure of the long-span metal roof according to claim 1, characterized in that: The movable latching assembly (51) includes a sliding block (511), a latching block (512), and a first spring (513). The sliding block (511) is slidably mounted on the support base (1) near the latching groove (11), and the sliding block is detachable from the support base. The sliding block (511) has a movable groove (514), and the latching block (512) is slidably mounted in the movable groove (514). The latching block (512) is used for... Insert into the snap-fit ​​groove (11); the first spring (513) is installed between the snap-fit ​​block (512) and the inner wall of the movable groove (514), and the elastic force of the first spring (513) causes the snap-fit ​​block (512) to be normally inserted into the snap-fit ​​groove (11); one side of the snap-fit ​​block (512) is defined as the first guide surface (515), and the first guide surface (515) is used to guide the snap-fit ​​block (512) into the movable groove (514).

7. The steel structure of the long-span metal roof according to claim 6, characterized in that: The snap-fit ​​block (512) is rotatably mounted in the movable groove (514), and the sliding block (511) is equipped with a positioning component (54) for fixing the position of the snap-fit ​​block (512).

8. The steel structure of the long-span metal roof according to claim 1, characterized in that: The fixing component (4) includes a sleeve (41) and a second bolt (42). When two adjacent truss units (2) abut against each other, the sleeve (41) is fitted between the two truss units (2), and the second bolt (42) is used to fix the position of the sleeve (41) on the truss unit (2).

9. A method of installing a long span metal roof based on any one of claims 1-8, characterized in that, The specific steps are as follows: S1 divides the large-span truss into multiple truss units (2), and then selects an appropriate support base (1) according to the specifications of the truss unit (2). S2 sets up a corresponding number of lifting mechanisms (5) according to the number of truss units (2). After fixing the truss unit (2) above the support base (1) by the lifting mechanism (5), the position of the truss unit (2) is adjusted by the adjustment component (6) and transferred to the top of the support base (1). S3 uses the installation assembly (3) to fix the truss unit (2) to the support base (1) and removes the lifting mechanism (5) from the support base (1) to transport the next set of truss units (2); S4 transports the next set of truss units (2) to the support base (1) via the lifting mechanism (5) and fixes the hook, so that it can be aligned with the adjacent truss unit (2) and connected to it via the fixing component (4); S5 connects multiple truss units (2) in sequence to form a complete large-span truss.

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